Which of the following statements is not true of nuclear fission?
Mother nucleus is broken into two daughter nuclei of roughly equal parts
Neutron is normally used in bombarding heavy nucleus
Two light nuclei are made to combine to form a heavy nucleus
Very enormous energy is released
There is an apparent loss of mass
Correct answer is C
No explanation has been provided for this answer.
The ratio of tensile stress to tensile strain is known as
Modulus of integrity
Modulus of elasticity
Shear modulus
Bulk modulus
Young’s modulus
Correct answer is E
No explanation has been provided for this answer.
Which of the following is not correct about the Rutherford’s model of an atom?
The mass of an atom is concentrated around the nucleus
The nucleus of an atom is positively charged
The nucleus is surrounded by the electron cloud
The model is applicable to atoms with only one electron in the outer shell
The diameter of the nucleus is \(10^{-15}m\)
Correct answer is D
No explanation has been provided for this answer.
Which of the following statements about kinetic theory of matter is not correct?
The molecules of matter are always in motion
When a body is heated the average kinetic energy of its molecules decreases
Molecules of a liquid move more freely than those of a solid
Matter is made up of very tiny particles called molecules
The molecules of a gas move more freely than those of a liquid
Correct answer is B
No explanation has been provided for this answer.
4.5 x \(10^{10}\)Hz
5 x \(10^{9}Hz\)
4.5 x \(10^{8}Hz\)
2 x \(10^{7}Hz\)
2 x \(10^{6}Hz\)
Correct answer is E
V=f\(\lambda, f =\frac{v}{\lambda}= \frac{3\times10^8}{150}\Rightarrow 2\times10^6\)Hz